Has*_*med 3 android push-notification firebase react-native expo
我正在使用 expo 开发一个应用程序。我想使用博览会通知在我的应用程序中发送和接收推送通知。我已经集成了博览会通知,并且成功收到通知,但没有声音和弹出警报。我总是必须向下滚动通知面板,然后才能看到通知。这是我用于注册通知的代码
async function registerForPushNotificationsAsync() {
let token;
if (Constants.isDevice) {
const { status: existingStatus } = await Permissions.getAsync(Permissions.NOTIFICATIONS);
let finalStatus = existingStatus;
if (existingStatus !== 'granted') {
const { status } = await Permissions.askAsync(Permissions.NOTIFICATIONS);
finalStatus = status;
}
if (finalStatus !== 'granted') {
alert('Failed to get push token for push notification!');
return;
}
token = (await Notifications.getExpoPushTokenAsync()).data;
console.log(token);
} else {
alert('Must use physical device for Push Notifications');
}
if (Platform.OS === 'android') {
Notifications.setNotificationChannelAsync('default', {
name: 'default',
importance: Notifications.AndroidImportance,
vibrationPattern: [0, 250, 250, 250],
lightColor: '#FF231F7C',
});
}
return token;
}
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这是我的 UseEffect,我正在其中注册并监听通知
useEffect(() => {
_gettingRestaurants();
registerForPushNotificationsAsync().then(token => setExpoPushToken(token));
// This listener is fired whenever a user taps on or interacts with a notification (works when app is foregrounded, backgrounded, or killed)
Notifications.addNotificationReceivedListener((notification)=>{
alert(notification);
});
Notifications.addNotificationResponseReceivedListener((response)=>{
alert(response);
});
}, [isDataFetched])
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另一件事是,这些听众也没有工作。我没有看到这两个警报的任何警报。请帮帮我。
谢谢你!!!
为了让听众工作,请尝试:
将其添加到您的app.json
{
"expo": {
...
"android": {
...
"useNextNotificationsApi": true,
}
}
}
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一开始它对我不起作用,但指定权限后,它起作用了:
{
"expo": {
...
"android": {
...
"useNextNotificationsApi": true,
"permissions": ["RECEIVE_BOOT_COMPLETED"]
}
}
}
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而且,如果它不起作用(它不适用于我的主项目,但适用于另一个项目),您可以尝试使用旧的通知系统,该系统使用addListener:
import * as Notifications from 'expo-notifications';
import { Notifications as Notifications2 } from 'expo';
Notifications.addNotificationReceivedListener((notification) => {
// New Notifications. Didn't work sometimes
});
Notifications2.addListener((data) => {
// Legacy notifications. You get a deprecation warning, but works when the new Notifications don't
});
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另请检查这是否可以帮助您在应用程序在后台关闭时获取通知(就在通知导入之后)
Notifications.setNotificationHandler({
handleNotification: async () => ({
shouldShowAlert: true,
shouldPlaySound: true,
shouldSetBadge: false,
}),
});
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要获取带有声音的通知:
如果您希望在应用程序处于后台时收到通知,则需要定义setNotificationHandlerwith shouldPlaySound: true。您还需要在通知中指定您想要播放声音,如下所示:
const message = {
to: expoPushToken,
sound: 'default', // <== the values are 'default' (sound) or null (silent)
title: 'Original Title',
body: 'And here is the body!',
data: { data: 'goes here' },
};
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我记得还有一个选项可以设置通知的优先级。尝试使用这些值,直到获得所需的结果。在此页面中搜索“优先级”:https ://docs.expo.io/versions/latest/sdk/notifications/
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